<!--  -->
<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像 -->
      <div class="avatar-box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登陆表单 -->
      <el-form
        ref="loginFormRef"
        class="login_form"
        :model="loginForm"
        :rules="loginFormRules"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  //   name: 'Login' ,
  data() {
    return {
      // 这是登录表单的数据对象
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      // 表单验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登陆的用户名', tigger: 'blur' },
          { min: 3, max: 10, message: '长度在3到10个字符', tigger: 'blur' },
        ],
        password: [
          { required: true, message: '请输入密码', tigger: 'blur' },
          { min: 5, max: 18, message: '长度在5到18个字符', tigger: 'blur' },
        ],
        // 验证密码是否合法
      },
    }
  },
  methods: {
    resetLoginForm() {
      //   console.log(this);
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登录失败')
        this.$message.success('登陆成功')
        // 1.将登陆成功之后的token，保存到客户端的sessionStorage中
        // 1.1项目中除了登录之外的其他API接口，必须在登陆之后才能访问
        // 1.2token 只应在当前网站打开期间生效，所以将token保存在sessionStorage中
        //   console.log(res);
        window.sessionStorage.setItem('token', res.data.token)
        // 2.通过编程式导航跳转到后台主页面，路由地址是 /home
        this.$router.push('/home')
      })
    },
  },
}
</script>
<style lang="less" scoped>
.login_container {
  background: #4d2d6d80;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background: #fff;
  border-radius: 5px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar-box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #eee;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: #eee;
  }
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 25px;
  box-sizing: border-box;
}
</style>